CVE-2026-32778

MEDIUMNVD 5.52.9▼Trending — 6 sources updated this week

5.5

EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.

Lower severity and no public exploit yet

CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

libexpat before 2.7.5 allows a NULL pointer dereference in the function setContext on retry after an earlier ouf-of-memory condition.

CVSS v3: 5.5
EG Score: 2.9(medium)
EPSS: 6.1%
KEV: Not listed

Published

March 16, 2026

Last Modified

July 14, 2026

Advisory Details (3)

Auto-updated Jul 14, 2026

⚠️ Active exploitation confirmed. Upstream fix merged — awaiting tagged release. Sources: github_pr.

generic🔴 Active Exploitation

SSA-082556

https://cert-portal.siemens.com/productcert/html/ssa-082556.html

github_pr

[CVE-2026-32778] Fix `NULL` deref in `setContext` on retry after OOM

Fix merged in libexpat/libexpat PR #1163 on 2026-03-16 — awaiting tagged release

https://github.com/libexpat/libexpat/pull/1163

github_pr

Prepare release 2.7.5 (part of #1157, ETA 2026-03-17)

Fix merged in libexpat/libexpat PR #1159 on 2026-03-17 — awaiting tagged release

https://github.com/libexpat/libexpat/pull/1159

Vendor Advisories for CVE-2026-32778(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-476NULL Pointer Dereference

Data Freshness Timeline

(refreshed 9× in last 7d / 9× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-07-15 16:57 UTCEPSS rescore
2026-07-15 16:57 UTCEPSS rescore
2026-07-15 02:00 UTCEPSS rescore
2026-07-15 02:00 UTCEPSS rescore
2026-07-14 13:19 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
2026-07-14 13:11 UTCEG score recompute
2026-07-14 13:11 UTCVendor advisory
2026-07-14 13:11 UTCGHSA enrichment
2026-07-14 13:11 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-32778?

CVE-2026-32778 is a medium vulnerability published on March 16, 2026. libexpat before 2.7.5 allows a NULL pointer dereference in the function setContext on retry after an earlier ouf-of-memory condition.

When was CVE-2026-32778 disclosed?

CVE-2026-32778 was first published in the National Vulnerability Database on March 16, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-32778 actively exploited?

CVE-2026-32778 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-32778?

CVE-2026-32778 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 2.9.

How do I remediate CVE-2026-32778?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-32778, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-32778

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